Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Special forms and forming
Reexamination Certificate
2005-01-04
2005-01-04
Einsmann, Margaret (Department: 1751)
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Special forms and forming
C008S922000, C008S929000, C008S933000, C008SDIG004, C008S147000, C008S149100
Reexamination Certificate
active
06836915
ABSTRACT:
In the process for continuously dyeing a poly(trimethylene terephthalate) bulked continuous filament yarn carpet an aqueous dyeing solution is applied to a continuously moving poly(trlmethylene terephthalate) bulked continuous filament yarn carpet at a temperature of 45° C. to 100° C., and then the poly(trimethylene terephthalate) bulked continuous filament yam carpet is steamed, rinsed and dried. Before applying the aqueous dyeing solution the carpet is heat-set at 120 to 150° C. The carpet is steamed with saturated steam at 102 to 150° C. for 5 to 10 mm. The aqueous dyeing solution does not include an anti-frosting agent. The process also advantageously includes heating the carpet with a dry heat of 140 to 300° C. for 30 to 60 sec after steaming the carpet and before rinsing it.
REFERENCES:
patent: 4101270 (1978-07-01), Fleissner
patent: 5782935 (1998-07-01), Hirt et al.
patent: 6284370 (2001-09-01), Fujimoto et al.
patent: 6544300 (2003-04-01), Cliver et al.
Jung Ii-won
Song Kee-chul
Yu Je-an
Einsmann Margaret
Hyosung Corporation
Striker Michael J.
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